Java HTML / XML How to - Traverse the DOM tree as a list


We would like to know how to traverse the DOM tree as a list.


   //from  w ww  .j a  v a  2 s. c om

import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.traversal.DocumentTraversal;
import org.w3c.dom.traversal.NodeFilter;
import org.w3c.dom.traversal.NodeIterator;
import org.xml.sax.InputSource;

public class Main {
  public static String getXMLData() {
    return "<a><person  number='' dept=''><name>myName</name></person></a>";

  public static void main(String[] argv) throws Exception {
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    Document document = factory.newDocumentBuilder().parse(
        new InputSource(new StringReader(getXMLData())));

    DocumentTraversal traversal = (DocumentTraversal) document;
    NodeIterator iterator = traversal.createNodeIterator(document.getDocumentElement(),
        NodeFilter.SHOW_ELEMENT, null, true);

    for (Node n = iterator.nextNode(); n != null; n = iterator.nextNode()) {
      System.out.println("Element: " + ((Element) n).getTagName());


The code above generates the following result.